mirror of
https://src.fedoraproject.org/rpms/grub2.git
synced 2024-11-28 15:46:53 +00:00
2e4660d8c6
Install kernel-install scripts. (javierm) Add grub2-switch-to-blscfg Signed-off-by: Peter Jones <pjones@redhat.com>
90 lines
3.1 KiB
Diff
90 lines
3.1 KiB
Diff
From df119e7a941f0e1329181d33d63349375b9b56d9 Mon Sep 17 00:00:00 2001
|
|
From: Josef Bacik <jbacik@fb.com>
|
|
Date: Wed, 12 Aug 2015 08:57:55 -0700
|
|
Subject: [PATCH 133/215] tcp: add window scaling support
|
|
|
|
Sometimes we have to provision boxes across regions, such as California to
|
|
Sweden. The http server has a 10 minute timeout, so if we can't get our 250mb
|
|
image transferred fast enough our provisioning fails, which is not ideal. So
|
|
add tcp window scaling on open connections and set the window size to 1mb. With
|
|
this change we're able to get higher sustained transfers between regions and can
|
|
transfer our image in well below 10 minutes. Without this patch we'd time out
|
|
every time halfway through the transfer. Thanks,
|
|
|
|
Signed-off-by: Josef Bacik <jbacik@fb.com>
|
|
---
|
|
grub-core/net/tcp.c | 42 +++++++++++++++++++++++++++++-------------
|
|
1 file changed, 29 insertions(+), 13 deletions(-)
|
|
|
|
diff --git a/grub-core/net/tcp.c b/grub-core/net/tcp.c
|
|
index e8ad34b84d4..7d4b822626d 100644
|
|
--- a/grub-core/net/tcp.c
|
|
+++ b/grub-core/net/tcp.c
|
|
@@ -106,6 +106,18 @@ struct tcphdr
|
|
grub_uint16_t urgent;
|
|
} GRUB_PACKED;
|
|
|
|
+struct tcp_scale_opt {
|
|
+ grub_uint8_t kind;
|
|
+ grub_uint8_t length;
|
|
+ grub_uint8_t scale;
|
|
+} GRUB_PACKED;
|
|
+
|
|
+struct tcp_synhdr {
|
|
+ struct tcphdr tcphdr;
|
|
+ struct tcp_scale_opt scale_opt;
|
|
+ grub_uint8_t padding;
|
|
+};
|
|
+
|
|
struct tcp_pseudohdr
|
|
{
|
|
grub_uint32_t src;
|
|
@@ -566,7 +578,7 @@ grub_net_tcp_open (char *server,
|
|
grub_net_tcp_socket_t socket;
|
|
static grub_uint16_t in_port = 21550;
|
|
struct grub_net_buff *nb;
|
|
- struct tcphdr *tcph;
|
|
+ struct tcp_synhdr *tcph;
|
|
int i;
|
|
grub_uint8_t *nbd;
|
|
grub_net_link_level_address_t ll_target_addr;
|
|
@@ -635,20 +647,24 @@ grub_net_tcp_open (char *server,
|
|
}
|
|
|
|
tcph = (void *) nb->data;
|
|
+ grub_memset(tcph, 0, sizeof (*tcph));
|
|
socket->my_start_seq = grub_get_time_ms ();
|
|
socket->my_cur_seq = socket->my_start_seq + 1;
|
|
- socket->my_window = 8192;
|
|
- tcph->seqnr = grub_cpu_to_be32 (socket->my_start_seq);
|
|
- tcph->ack = grub_cpu_to_be32_compile_time (0);
|
|
- tcph->flags = grub_cpu_to_be16_compile_time ((5 << 12) | TCP_SYN);
|
|
- tcph->window = grub_cpu_to_be16 (socket->my_window);
|
|
- tcph->urgent = 0;
|
|
- tcph->src = grub_cpu_to_be16 (socket->in_port);
|
|
- tcph->dst = grub_cpu_to_be16 (socket->out_port);
|
|
- tcph->checksum = 0;
|
|
- tcph->checksum = grub_net_ip_transport_checksum (nb, GRUB_NET_IP_TCP,
|
|
- &socket->inf->address,
|
|
- &socket->out_nla);
|
|
+ socket->my_window = 32768;
|
|
+ tcph->tcphdr.seqnr = grub_cpu_to_be32 (socket->my_start_seq);
|
|
+ tcph->tcphdr.ack = grub_cpu_to_be32_compile_time (0);
|
|
+ tcph->tcphdr.flags = grub_cpu_to_be16_compile_time ((6 << 12) | TCP_SYN);
|
|
+ tcph->tcphdr.window = grub_cpu_to_be16 (socket->my_window);
|
|
+ tcph->tcphdr.urgent = 0;
|
|
+ tcph->tcphdr.src = grub_cpu_to_be16 (socket->in_port);
|
|
+ tcph->tcphdr.dst = grub_cpu_to_be16 (socket->out_port);
|
|
+ tcph->tcphdr.checksum = 0;
|
|
+ tcph->scale_opt.kind = 3;
|
|
+ tcph->scale_opt.length = 3;
|
|
+ tcph->scale_opt.scale = 5;
|
|
+ tcph->tcphdr.checksum = grub_net_ip_transport_checksum (nb, GRUB_NET_IP_TCP,
|
|
+ &socket->inf->address,
|
|
+ &socket->out_nla);
|
|
|
|
tcp_socket_register (socket);
|
|
|
|
--
|
|
2.15.0
|
|
|